Frequency doubling laser generating device
A generation device and frequency doubling technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of destroying the narrow linewidth characteristics of lasers, and the inability to obtain high-power single-frequency or narrow-linewidth frequency-doubling lasers, etc.
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Embodiment 1
[0035] The single-frequency laser 1 is a single-frequency distributed feedback (DFB) fiber laser with a linewidth of less than 100MHz, and the central wavelength is 1064nm; the phase modulator 2 adopts an electro-optic phase modulator with a fiber tail, and the signal generator 3 adopts an arbitrary wave signal source. Wave signal, frequency 100MHz, output amplitude 6V; laser amplifier 4 is a rare earth-doped fiber laser amplifier, and its gain fiber is an ytterbium-doped fiber, which is connected in turn by a primary isolator 4.1, a primary ytterbium-doped fiber amplifier 4.2, and a secondary Isolator 4.3, two-stage ytterbium-doped fiber amplifier 4.4, ..., (N+1) / 2-stage isolator 4.N, (N+1) / 2-stage ytterbium-doped fiber amplifier 4.N+1, N is Odd number; frequency doubling device 6 is a single-pass frequency doubling device, composed of optical lens 6.1, periodically polarized stoichiometric ratio lithium tantalate (PPSLT) frequency doubling crystal 6.2 and optical lens and bea...
Embodiment 2
[0037] Single-frequency laser 1 is a single-frequency external-cavity semiconductor (ECDL) laser with a linewidth of less than 120 MHz, with a central wavelength of 1178 nm, which can be loaded with an external radio frequency signal; phase modulator 2 is an electro-optic phase modulator with a fiber tail; signal generator 3 adopts any A wave signal source generates a square wave signal with a frequency of 1.71GHz and an output amplitude of 10V; the laser amplifier 4 is a fiber Raman laser amplifier, and its gain fiber is a phosphorous fiber, including an isolator and a phosphorous fiber amplifier of the phosphorous fiber amplifier; a frequency doubling device 6 is a resonant frequency doubling device, including a cavity mirror and a digital cavity-locked servo system. A 25MHz radio frequency signal is loaded on a single-frequency laser, and a triangular wave is output. After being amplified by a high-voltage amplifier module, the piezoelectric ceramic PZT is controlled. The tri...
Embodiment 3
[0039] The single-frequency laser 1 is a distributed Bragg reflection (DBR) single-frequency fiber laser with a linewidth of less than 10MHz, and the center wavelength is 1018nm; the phase modulator 2 is a space electro-optical phase modulator; the signal generator 3 is a pseudo-random code signal source, which generates 2 7-1 pseudo-random signal, pseudo-code rate 2Gbps, output amplitude 8V; laser amplifier 4 is a rare-earth doped solid-state laser amplifier, and its gain is ytterbium-doped yttrium aluminum garnet (Yb:YAG) crystal, which is connected in turn by a Stage isolator 4.1, stage one Yb:YAG amplifier 4.2, stage two isolator 4.3, stage two Yb:YAG amplifier 4.4, stage three isolator 4.5, stage three Yb:YAG amplifier 4.6; frequency multiplier 6 is single-pass frequency multiplication The device is composed of an optical lens, a beam splitter 6.1, and a frequency doubling crystal lithium triborate crystal (LBO) 6.2.
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